20993469

素因数分解:

$3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{7297}}^1$

素因数の和:7444

約数の個数: 16

約数和(自身を含む): 32227968

約数和(自身を除く): 11234499

約数列:

[1, 3, 7, 21, 137, 411, 959, 2877, 7297, 21891, 51079, 153237, 999689, 2999067, 6997823, 20993469]

約数ペア:

[(1, 20993469), (3, 6997823), (7, 2999067), (21, 999689), (137, 153237), (411, 51079), (959, 21891), (2877, 7297)]